Optical: systems and elements – Optical computing without diffraction
Patent
1993-07-15
1996-01-30
Gross, Anita Pellman
Optical: systems and elements
Optical computing without diffraction
359 63, G02F 113, G02F 11335
Patent
active
054884993
ABSTRACT:
A display characteristic of a high contrast ratio and a high transmittance through the application of a chiral nematic liquid crystal medium switchable between metastable states via Frederick's transition is utilized as a liquid crystal electrooptical element. The electrooptical element employs a white light source and is switchable between metastable states in which the polarization axes of both polarization plates are set to predetermined angles P and A according to the initial state of the liquid crystal medium and the product, R, of the thickness, d, and the difference, .DELTA.n, in the refractive indices of the liquid crystal medium for extraordinary light, n.sub.e, and ordinary light, n.sub.o (.DELTA.n=n.sub.e -n.sub.o).
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Sato Yuzuru
Tanaka Takaaki
Gross Anita Pellman
Miller Charles
Seiko Epson Corporation
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